Umm, ok, I think I get it. Incomplete information, so you really can't diagnose the problem effectively. I haven't run into much else that isn't working that seems associated. The top works fine. Both doors and the trunk lock and unlock with the key in the driver's door. The car starts fine with the key. So I'm thinking it's just the remote that doesn't work. But I can't tell whether it's the remote itself, or a part in the car. Given what I've read on this site (big help), I'm suspecting the culprit is in the trunk. So I'm pretty sure I need to dig into the trunk next to see if that security gizmo is working or swamped.

I only got what the mechanic wielding the diagnostic computer said secondhand. So it's no telling what he meant by "not communicating". I don't know if he's just looking for codes that didn't come through, or if his computer was telling him something was dead in the car. I'll be back there tomorrow, so maybe I can dig out a little more specific information.

[I took the car in to get it inspected, and apparently in the middle of asking to mount new tires on the rear (because the ones on it were too bare to pass) and discovering leaky valve covers and faulty TMPS sensors the actual inspection got lost…]